PIC18F47Q10 定时器1

1万 · 2021-12-1 22:42

本帖最后由 pzsh 于 2021-12-14 14:44 编辑

因MCC生成的程序中的函数很多，不理解，有点乱，所以主程序还是调试不了用定时器1进行1S时间闪烁LED。所以用下面手输的程序进行调试。但程序下载后还是无法运行，LED灯是一直灭的

1万 · 2021-12-1 22:44

下面程序哪些地方是错误的。
#include <xc.h>
#define uint unsigned int
uint num;

void timer1_init();

void main(void)
{
timer1_init();

while(num==20)
{

      num=0;
      PORTEbits.RE0=0;

}
return;
}
void timer1_init()
{
num=0;
TRISE=0x00;
PORTE=0xFF;

   //TMR1CLK = 0x01;
   TMR1CLK=0x04;
   OSCFRQ=0x05;
   TMR1H =(65536-50000)/256;
   TMR1L = (65536-50000)%256;
   T1CON = 0x03;
   //IPR4=0x04;
   PIE4bits.TMR1IE = 1;
   PIR4bits.TMR1IF = 0;
   INTCON = 0xC0;
}
void __interrupt() _tmer1(void)
{
PIR4bits.TMR1IF = 0;
TMR1H =(65536-50000)/256;
TMR1L = (65536-50000)%256;
num++;
}

1万 · 2021-12-1 22:47

正文里没写出MCU型号，这里补充下是：PIC18F47Q10,此程序也是基于PIC16F73程序上做修改的。

2万 · 2021-12-1 22:50

是不是配置字没设

1万 · 2021-12-1 22:53

没有使用MCC来配置代码？

1万 · 2021-12-1 22:54

使用MCC来配置就简单方便的多。

1万 · 2021-12-1 22:56

配置字和PIC16F系列的不一样，我也想了解下。感觉和以前的不一样。

1万 · 2021-12-1 22:58

手册有配置字这个章节，每个应该都有描述的。

2万 · 2021-12-1 23:00

想看下各位大佬手写的程序，我想应该会比MCC软件配置来得更直观吧。

1万 · 2021-12-1 23:01

配置字加了很多遍但都是不行，现在就按默认的。大佬能不能帮忙看下会是什么原因？

1万 · 2021-12-1 23:03

能不能教下如何用MCC配置后，主要是主程序如何写。

1万 · 2021-12-1 23:06

您可以参考这个帖子：https://bbs.21ic.com/icview-2966980-1-1.html

1万 · 2021-12-1 23:09

好的PIC程序,需要具备以下几点,
1. 可以看到代码化的配置字设置.
2. 在main起始处可以看到明显的时钟及频率设置
3. 在mian的起始处可以看到明显的IO口初始化(输入输出,模拟/数字)

1万 · 2021-12-1 23:12

你这个程序的写法槽点太多了....
请回到MCC生成代码的正确结构的道路上来~~~

1万 · 2021-12-1 23:14

从你帖的代码中，发现的主要问题：没有使能全局中断
- 在main()函数中，加入代码 ei();

2万 · 2021-12-1 23:15

主函数中，缺少while(1), 导致main 函数执行一次即退出。

1万 · 2021-12-1 23:18

LED不亮可以调试啊，不要只靠肉眼看

1万 · 2021-12-1 23:23

比如，有没有执行到点亮LED的语句，有没有进中断，作为条件判断的变量怎么样在变等等。。。

1万 · 2021-12-1 23:25

修改了一下你的程序，你运行下看看。

// PIC18F47Q10 Configuration Bit Settings

// 'C' source line config statements

// CONFIG1L
#pragma config FEXTOSC = HS    // External Oscillator mode Selection bits (HS (crystal oscillator) above 8 MHz; PFM set to high power)
#pragma config RSTOSC = HFINTOSC_64MHZ// Power-up default value for COSC bits (HFINTOSC with HFFRQ = 64 MHz and CDIV = 1:1)

// CONFIG1H
#pragma config CLKOUTEN = OFF // Clock Out Enable bit (CLKOUT function is disabled)
#pragma config CSWEN = ON    // Clock Switch Enable bit (Writing to NOSC and NDIV is allowed)
#pragma config FCMEN = ON    // Fail-Safe Clock Monitor Enable bit (Fail-Safe Clock Monitor enabled)

// CONFIG2L
#pragma config MCLRE = EXTMCLR  // Master Clear Enable bit (MCLR pin (RE3) is MCLR)
#pragma config PWRTE = OFF    // Power-up Timer Enable bit (Power up timer disabled)
#pragma config LPBOREN = OFF // Low-power BOR enable bit (Low power BOR is disabled)
#pragma config BOREN = SBORDIS  // Brown-out Reset Enable bits (Brown-out Reset enabled , SBOREN bit is ignored)

// CONFIG2H
#pragma config BORV = VBOR_190  // Brown Out Reset Voltage selection bits (Brown-out Reset Voltage (VBOR) set to 1.90V)
#pragma config ZCD = OFF       // ZCD Disable bit (ZCD disabled. ZCD can be enabled by setting the ZCDSEN bit of ZCDCON)
#pragma config PPS1WAY = ON    // PPSLOCK bit One-Way Set Enable bit (PPSLOCK bit can be cleared and set only once; PPS registers remain locked after one clear/set cycle)
#pragma config STVREN = ON    // Stack Full/Underflow Reset Enable bit (Stack full/underflow will cause Reset)
#pragma config XINST = OFF    // Extended Instruction Set Enable bit (Extended Instruction Set and Indexed Addressing Mode disabled)

// CONFIG3L
#pragma config WDTCPS = WDTCPS_31// WDT Period Select bits (Divider ratio 1:65536; software control of WDTPS)
#pragma config WDTE = OFF       // WDT operating mode (WDT always enabled)

// CONFIG3H
#pragma config WDTCWS = WDTCWS_7// WDT Window Select bits (window always open (100%); software control; keyed access not required)
#pragma config WDTCCS = SC    // WDT input clock selector (Software Control)

// CONFIG4L
#pragma config WRT0 = OFF    // Write Protection Block 0 (Block 0 (000800-003FFFh) not write-protected)
#pragma config WRT1 = OFF    // Write Protection Block 1 (Block 1 (004000-007FFFh) not write-protected)
#pragma config WRT2 = OFF    // Write Protection Block 2 (Block 2 (008000-00BFFFh) not write-protected)
#pragma config WRT3 = OFF    // Write Protection Block 3 (Block 3 (00C000-00FFFFh) not write-protected)
#pragma config WRT4 = OFF    // Write Protection Block 4 (Block 4 (010000-013FFFh) not write-protected)
#pragma config WRT5 = OFF    // Write Protection Block 5 (Block 5 (014000-017FFFh) not write-protected)
#pragma config WRT6 = OFF    // Write Protection Block 6 (Block 6 (018000-01BFFFh) not write-protected)
#pragma config WRT7 = OFF    // Write Protection Block 7 (Block 7 (01C000-01FFFFh) not write-protected)

// CONFIG4H
#pragma config WRTC = OFF    // Configuration Register Write Protection bit (Configuration registers (300000-30000Bh) not write-protected)
#pragma config WRTB = OFF    // Boot Block Write Protection bit (Boot Block (000000-0007FFh) not write-protected)
#pragma config WRTD = OFF    // Data EEPROM Write Protection bit (Data EEPROM not write-protected)
#pragma config SCANE = ON    // Scanner Enable bit (Scanner module is available for use, SCANMD bit can control the module)
#pragma config LVP = ON       // Low Voltage Programming Enable bit (Low voltage programming enabled. MCLR/VPP pin function is MCLR. MCLRE configuration bit is ignored)

// CONFIG5L
#pragma config CP = OFF       // UserNVM Program Memory Code Protection bit (UserNVM code protection disabled)
#pragma config CPD = OFF       // DataNVM Memory Code Protection bit (DataNVM code protection disabled)

// CONFIG5H

// CONFIG6L
#pragma config EBTR0 = OFF    // Table Read Protection Block 0 (Block 0 (000800-003FFFh) not protected from table reads executed in other blocks)
#pragma config EBTR1 = OFF    // Table Read Protection Block 1 (Block 1 (004000-007FFFh) not protected from table reads executed in other blocks)
#pragma config EBTR2 = OFF    // Table Read Protection Block 2 (Block 2 (008000-00BFFFh) not protected from table reads executed in other blocks)
#pragma config EBTR3 = OFF    // Table Read Protection Block 3 (Block 3 (00C000-00FFFFh) not protected from table reads executed in other blocks)
#pragma config EBTR4 = OFF    // Table Read Protection Block 4 (Block 4 (010000-013FFFh) not protected from table reads executed in other blocks)
#pragma config EBTR5 = OFF    // Table Read Protection Block 5 (Block 5 (014000-017FFFh) not protected from table reads executed in other blocks)
#pragma config EBTR6 = OFF    // Table Read Protection Block 6 (Block 6 (018000-01BFFFh) not protected from table reads executed in other blocks)
#pragma config EBTR7 = OFF    // Table Read Protection Block 7 (Block 7 (01C000-01FFFFh) not protected from table reads executed in other blocks)

// CONFIG6H
#pragma config EBTRB = OFF    // Boot Block Table Read Protection bit (Boot Block (000000-0007FFh) not protected from table reads executed in other blocks)

// #pragma config statements should precede project file includes.
// Use project enums instead of #define for ON and OFF.

#include <xc.h>

#define uint unsigned int
uint num;

void timer1_init();

void main(void)
{

timer1_init();

ei();
while(1){
      while(num==20)
      {

         num=0;
         PORTEbits.RE0 = 1 - PORTEbits.RE0 ;

      }
}

}
void timer1_init()
{
num=0;
TRISE=0x00;
PORTE=0xFF;
ANSELE = 0;

   //TMR1CLK = 0x01;
   TMR1CLK=0x04;
   OSCFRQ=0x05;
   TMR1H =(65536-500)/256;
   TMR1L = (65536-500)%256;
   T1CON = 0x03;
   //IPR4=0x04;
   PIE4bits.TMR1IE = 1;
   PIR4bits.TMR1IF = 0;
   INTCON = 0xC0;
}
void __interrupt() _tmer1(void)
{
PIR4bits.TMR1IF = 0;
TMR1H =(65536-500)/256;
TMR1L = (65536-500)%256;
num++;
}

1万 · 2021-12-1 23:28

谢谢！程序可以正常运行了。